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Ethyl Glucuronide (EtG) is a unique biological metabolite that is formed in the body after the consumption of ethanol, typically from drinking alcoholic beverages. Reported to be detectable in urine typically from 8-80 hours after ingestion, and 2-36 hours in blood EtG is detectable over a period roughly 5-6 times longer than traditional urine ethanol testing Detectable in oral fluid only a few hours longer than ethanol* EtG has also been isolated in hair follicles *G.Heiseth, B. Yttredal, et.al. ; JATox: July 2010
Only .02-.04 percent of alcohol is metabolized by this pathway, how-ever, EtG can be detected in urine for up to three to five days following consumption of alcohol. EtG isnot detectable unless alcohol has been consumed. Additionally, EtG offers the additional advantages ofbeing detectable in body tissues and in hair following drinking. Usefulness of the test was affirmed in one study involving psychiatric inpatients who had been hospital-ized for crimes related to alcohol use.